QuakeIndex

Earthquake · reviewed by a seismologist

M 4.0md

62 km SE of Boca de Yuma, Dominican Republic

Yes. A magnitude 4.0 earthquake was recorded 62 km SE of Boca de Yuma, Dominican Republic, at 7:55 pm AST on 29 March 2018 (23:55 UTC), 55 km deep. 1 person has reported feeling it to USGS.

· 55 km deep · released about 16 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mayagüez Municipio 28 kmRincón Municipio 101 kmCabo Rojo Municipio 102 kmAguada Municipio 109 kmHormigueros Municipio 110 kmAñasco Municipio 111 kmAguadilla Municipio 117 kmLajas Municipio 117 kmSan Germán Municipio 118 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 4.0 (md)
Depth
55 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Mayagüez Municipio, 28 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3064 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

At this magnitude and depth, people at rest would likely notice it out to about 81 km (50 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 16 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 11,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 480× the energy of this one
  3. Magna, Utah 2020 M 5.7 340× the energy of this one
  4. This earthquake M 4.0 about 16 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 33× more

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2017-06-22 — about 2.9 times the energy of this one.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 18.0300, -68.1463. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Mayagüez Municipio, PR 28 km (17 mi) ENE earthquakes near Mayagüez Municipio
Rincón Municipio, PR 101 km (63 mi) ENE earthquakes near Rincón Municipio
Cabo Rojo Municipio, PR 102 km (63 mi) E earthquakes near Cabo Rojo Municipio
Aguada Municipio, PR 109 km (67 mi) ENE earthquakes near Aguada Municipio
Hormigueros Municipio, PR 110 km (68 mi) E earthquakes near Hormigueros Municipio
Añasco Municipio, PR 111 km (69 mi) ENE earthquakes near Añasco Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

49 earthquakes have been recorded within 50 km since this one.

  1. 3.3 39 km SSE of Boca de Yuma, Dominican Republic
  2. 3.2 17 km SE of Boca de Yuma, Dominican Republic
  3. 2.9 75 km SE of Boca de Yuma, Dominican Republic
  4. 3.0 59 km SE of Boca de Yuma, Dominican Republic
  5. 2.8 48 km SE of Punta Cana, Dominican Republic
  6. 3.3 47 km SE of Boca de Yuma, Dominican Republic
  7. 2.9 73 km SE of Punta Cana, Dominican Republic
  8. 3.4 65 km SE of Punta Cana, Dominican Republic
  9. 3.1 55 km ESE of Punta Cana, Dominican Republic
  10. 2.7 74 km SE of Boca de Yuma, Dominican Republic
  11. 2.8 34 km SSE of Boca de Yuma, Dominican Republic
  12. 2.8 58 km W of Puerto Real, Puerto Rico
  13. 2.7 51 km SE of Punta Cana, Dominican Republic
  14. 2.7 39 km S of Boca de Yuma, Dominican Republic
  15. 3.0 51 km SE of Punta Cana, Dominican Republic

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.